To Quit or not to Quit

To Quit or not to quit. This is the question that every smoker asks.

Smoking is one hard habit to break, so they say. I know I could do it but then again, I find myself between choosing to lose something that helps me relieve the stress from work.
There are five of us at home. Three of us are smokers. The only time you won't see us smoking is when we have cough or colds.
A friend of mine has asthma. His girlfriend sent a text message just this afternoon and wanted all of us to quit smoking by January 2, 2009. Why not January 1? According to Kane, it's because everyone will still be enhaling smoke after fireworks during the new year celebration.

What is it with smoking which makes it hard to resist? Everyone has been made aware of the ill effects of smoking but why are we always caught in between deciding to stop or to continue? Or are we just justifying our weakness and unwillingness to quit smoking?